Question

What is the factorization of the following trinomial? 15x2 - 44x - 36

(5x - 9)(3x +4)
(3x - 4) (5x + 9)
(5x -18) (3x + 2)
(5x + 18 ) (3x - 2 )

Answer 1

Answer (5x+2)(3x-2)

Explanation
Break into groups
(15x^2+6x) + (-10x-4)
Factor
3x(5x+2)-2(5x+2)
Factor out common term(5x+2)
=(5x+2)(3x-2)

Answer 2

(5x + 18) ( 3x-2)

Explanation:

(3x ) ( 5x )

then guess and check

(5x + 18) (3x-2)

i find it easier to look at the answers and redistribute them to create a trinomial especially if they give you a multiple choice